Numbers 3:40-43

Webster(i)40 And the LORD said to Moses, number all the first-born of the males of the children of Israel, from a month old and upward, and take the number of their names.
41 And thou shalt take the Levites for me (I am the LORD) instead of all the first-born among the children of Israel; and the cattle of the Levites, instead of all the firstlings among the cattle of the children of Israel.
42 And Moses numbered, as the LORD commanded him, all the first-born among the children of Israel.
43 And all the first-born males by the number of names, from a month old and upward, of those that were numbered of them, were twenty and two thousand two hundred and seventy and three.